NAME
spawn.h — spawn
(ADVANCED REALTIME)
SYNOPSIS
DESCRIPTION
The <spawn.h> header shall define the posix_spawnattr_t and posix_spawn_file_actions_t types used in performing spawn operations.
The <spawn.h> header shall define the flags that may be set in a posix_spawnattr_t object using the posix_spawnattr_setflags(3) function:
POSIX_SPAWN_RESETIDS POSIX_SPAWN_SETPGROUP [PS] POSIX_SPAWN_SETSCHEDPARAM POSIX_SPAWN_SETSCHEDULER POSIX_SPAWN_SETSIGDEF POSIX_SPAWN_SETSIGMASK
The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.
int posix_spawn(pid_t *restrict, const char *restrict,
const posix_spawn_file_actions_t *,
const posix_spawnattr_t *restrict, char *const [restrict],
char *const [restrict]);
int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *,
int);
int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *,
int, int);
int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t *restrict,
int, const char *restrict, int, mode_t);
int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *);
int posix_spawn_file_actions_init(posix_spawn_file_actions_t *);
int posix_spawnattr_destroy(posix_spawnattr_t *);
int posix_spawnattr_getsigdefault(const posix_spawnattr_t *restrict,
sigset_t *restrict);
int posix_spawnattr_getflags(const posix_spawnattr_t *restrict,
short *restrict);
int posix_spawnattr_getpgroup(const posix_spawnattr_t *restrict,
pid_t *restrict);
[PS]
int posix_spawnattr_getschedparam(const posix_spawnattr_t *restrict,
struct sched_param *restrict);
int posix_spawnattr_getschedpolicy(const posix_spawnattr_t *restrict,
int *restrict);
int posix_spawnattr_getsigmask(const posix_spawnattr_t *restrict,
sigset_t *restrict);
int posix_spawnattr_init(posix_spawnattr_t *);
int posix_spawnattr_setsigdefault(posix_spawnattr_t *restrict,
const sigset_t *restrict);
int posix_spawnattr_setflags(posix_spawnattr_t *, short);
int posix_spawnattr_setpgroup(posix_spawnattr_t *, pid_t);
[PS]
int posix_spawnattr_setschedparam(posix_spawnattr_t *restrict,
const struct sched_param *restrict);
int posix_spawnattr_setschedpolicy(posix_spawnattr_t *, int);
int posix_spawnattr_setsigmask(posix_spawnattr_t *restrict,
const sigset_t *restrict);
int posix_spawnp(pid_t *restrict, const char *restrict,
const posix_spawn_file_actions_t *,
const posix_spawnattr_t *restrict,
char *const [restrict], char *const [restrict]);
Inclusion of the <spawn.h> header may make visible symbols defined in the <sched.h>, <signal.h>, and <sys/types.h> headers.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
<sched.h>, <semaphore.h>, <signal.h>, <sys/types.h>, the System Interfaces volume of IEEE Std 1003.1-2001 (“POSIX.1”), posix_spawnattr_destroy(3), posix_spawnattr_getsigdefault(3), posix_spawnattr_getflags(3), posix_spawnattr_getpgroup(3), posix_spawnattr_getschedparam(3), posix_spawnattr_getschedpolicy(3), posix_spawnattr_getsigmask(3), posix_spawnattr_init(3), posix_spawnattr_setsigdefault(3), posix_spawnattr_setflags(3), posix_spawnattr_setpgroup(3), posix_spawnattr_setschedparam(3), posix_spawnattr_setschedpolicy(3), posix_spawnattr_setsigmask(3), posix_spawn(3), posix_spawn_file_actions_addclose(3), posix_spawn_file_actions_adddup2(3), posix_spawn_file_actions_addopen(3), posix_spawn_file_actions_destroy(3), posix_spawn_file_actions_init(3), posix_spawnp(3)
CHANGE HISTORY
First released in Issue 6. Included for alignment with IEEE Std 1003.1d-1999.
The restrict keyword is added to the prototypes for posix_spawn(3), posix_spawn_file_actions_addopen(3), posix_spawnattr_getsigdefault(3), posix_spawnattr_getflags(3), posix_spawnattr_getpgroup(3), posix_spawnattr_getschedparam(3), posix_spawnattr_getschedpolicy(3), posix_spawnattr_getsigmask(3), posix_spawnattr_setsigdefault(3), posix_spawnattr_setschedparam(3), posix_spawnattr_setsigmask(3), and posix_spawnp(3).
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